@article{1103858364, author = {D\aa hn, G\"unter}, title = {The algebra generated by physical filters}, journal = {Comm. Math. Phys.}, volume = {24}, number = {2}, year = {1972}, pages = { 109-122}, language = {en}, url = {http://dml.mathdoc.fr/item/1103858364} }
Dåhn, Günter. The algebra generated by physical filters. Comm. Math. Phys., Tome 24 (1972) no. 2, pp. 109-122. http://gdmltest.u-ga.fr/item/1103858364/